chore: import upstream snapshot with attribution

components/bootloader_support/bootloader_flash/include/esp_private/bootloader_flash_internal.h

@@ -0,0 +1,38 @@
+/*
+ * SPDX-FileCopyrightText: 2020-2024 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#pragma once
+#include <stdint.h>
+#include <esp_err.h>
+#include "soc/soc_caps.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Initialize spi_flash in bootloader and print flash info
+ *
+ * @return ESP_OK on success, otherwise see esp_err_t
+ */
+esp_err_t bootloader_init_spi_flash(void);
+
+#if CONFIG_APP_BUILD_TYPE_RAM && !CONFIG_APP_BUILD_TYPE_PURE_RAM_APP
+/**
+ * @brief Config all flash related stuff according to the header. The consistency of all flash configs is ensured.
+ *
+ * @return None
+ */
+void bootloader_flash_hardware_init(void);
+#endif
+
+/**
+ * @brief Initialise mspi core clock
+ */
+void bootloader_init_mspi_clock(void);
+
+#ifdef __cplusplus
+}
+#endif